Windows WMI Process Call Create: endpointEndpointrisk_score:252024-10-17version:3
The following analytic detects the execution of WMI command lines used to create or execute processes. It leverages data from Endpoint Detection and Response (EDR) agents, focusing on command-line events that include specific keywords like "process," "call," and "create." This activity is significant because adversaries often use WMI to execute malicious payloads on local or remote hosts, potentially bypassing traditional security controls. If confirmed malicious, this behavior could allow attackers to execute arbitrary code, escalate privileges, or maintain persistence within the environment, posing a severe threat to organizational security.
Powershell Processing Stream Of Data: endpointEndpointrisk_score:402024-09-30version:5
The following analytic detects suspicious PowerShell script execution involving compressed stream data processing, identified via EventCode 4104. It leverages PowerShell Script Block Logging to flag scripts using `IO.Compression`, `IO.StreamReader`, or decompression methods. This activity is significant as it often indicates obfuscated PowerShell or embedded .NET/binary execution, which are common tactics for evading detection. If confirmed malicious, this behavior could allow attackers to execute hidden code, escalate privileges, or maintain persistence within the environment.
IcedID Exfiltrated Archived File Creation: endpointEndpointrisk_score:722024-10-17version:3
The following analytic detects the creation of suspicious files named passff.tar and cookie.tar, which are indicative of archived stolen browser information such as history and cookies on a machine compromised with IcedID. It leverages Sysmon EventCode 11 to identify these specific filenames. This activity is significant because it suggests that sensitive browser data has been exfiltrated, which could lead to further exploitation or data breaches. If confirmed malicious, this could allow attackers to access personal information, conduct further phishing attacks, or escalate their presence within the network.
Sqlite Module In Temp Folder: endpointEndpointrisk_score:92024-09-30version:3
The following analytic detects the creation of sqlite3.dll files in the %temp% folder. It leverages Sysmon EventCode 11 to identify when these files are written to the temporary directory. This activity is significant because it is associated with IcedID malware, which uses the sqlite3 module to parse browser databases and steal sensitive information such as banking details, credit card information, and credentials. If confirmed malicious, this behavior could lead to significant data theft and compromise of user accounts.
Create Remote Thread In Shell Application: endpointEndpointrisk_score:702024-11-26version:5
The following analytic detects suspicious process injection in command shell applications, specifically targeting `cmd.exe` and `powershell.exe`. It leverages Sysmon EventCode 8 to identify the creation of remote threads within these shell processes. This activity is significant because it is a common technique used by malware, such as IcedID, to inject malicious code and execute it within legitimate processes. If confirmed malicious, this behavior could allow an attacker to execute arbitrary code, escalate privileges, or maintain persistence within the environment, posing a severe threat to system security.
CHCP Command Execution: endpointEndpointrisk_score:92024-09-30version:3
The following analytic detects the execution of the chcp.exe application, which is used to change the active code page of the console. This detection leverages data from Endpoint Detection and Response (EDR) agents, focusing on process creation events where chcp.exe is executed by cmd.exe with specific command-line arguments. This activity is significant because it can indicate the presence of malware, such as IcedID, which uses this technique to determine the locale region, language, or country of the compromised host. If confirmed malicious, this could lead to further system compromise and data exfiltration.
Remote WMI Command Attempt: endpointEndpointrisk_score:362024-09-30version:6
The following analytic detects the execution of `wmic.exe` with the `node` switch, indicating an attempt to spawn a local or remote process. This detection leverages data from Endpoint Detection and Response (EDR) agents, focusing on process creation events and command-line arguments. This activity is significant as it may indicate lateral movement or remote code execution attempts by an attacker. If confirmed malicious, the attacker could gain remote control over the targeted system, execute arbitrary commands, and potentially escalate privileges or persist within the environment.
Detect PsExec With accepteula Flag: endpointEndpointrisk_score:352024-09-30version:7
The following analytic identifies the execution of `PsExec.exe` with the `accepteula` flag in the command line. It leverages data from Endpoint Detection and Response (EDR) agents, focusing on process execution logs and command-line arguments. This activity is significant because PsExec is commonly used by threat actors to execute code on remote systems, and the `accepteula` flag indicates first-time usage, which could signify initial compromise. If confirmed malicious, this activity could allow attackers to gain remote code execution capabilities, potentially leading to further system compromise and lateral movement within the network.
Office Application Spawn Regsvr32 process: endpointEndpointrisk_score:632024-11-28version:7
The following analytic identifies instances where an Office application spawns a Regsvr32 process, which is often indicative of macro execution or malicious code. This detection leverages data from Endpoint Detection and Response (EDR) agents, focusing on process creation events where the parent process is a known Office application. This activity is significant because it is a common technique used by malware, such as IcedID, to initiate infections. If confirmed malicious, this behavior could lead to code execution, allowing attackers to gain control over the affected system and potentially escalate privileges.
Rundll32 Create Remote Thread To A Process: endpointEndpointrisk_score:562024-09-30version:3
The following analytic detects the creation of a remote thread by rundll32.exe into another process. It leverages Sysmon EventCode 8 logs, specifically monitoring SourceImage and TargetImage fields. This activity is significant as it is a common technique used by malware, such as IcedID, to execute malicious code within legitimate processes, aiding in defense evasion and data theft. If confirmed malicious, this behavior could allow an attacker to execute arbitrary code, escalate privileges, and exfiltrate sensitive information from the compromised host.
Disable Defender BlockAtFirstSeen Feature: endpointEndpointrisk_score:492024-12-08version:8
The following analytic detects the modification of the Windows registry to disable the Windows Defender BlockAtFirstSeen feature. It leverages data from the Endpoint.Registry data model, specifically monitoring changes to the registry path associated with Windows Defender SpyNet and the DisableBlockAtFirstSeen value. This activity is significant because disabling this feature can allow malicious files to bypass initial detection by Windows Defender, increasing the risk of malware infection. If confirmed malicious, this action could enable attackers to execute malicious code undetected, leading to potential system compromise and data breaches.
Account Discovery With Net App: endpointEndpointrisk_score:52024-09-30version:7
The following analytic detects potential account discovery activities using the 'net' command, commonly employed by malware like Trickbot for reconnaissance. It leverages Endpoint Detection and Response (EDR) data, focusing on specific command-line patterns and process relationships. This activity is significant as it often precedes further malicious actions, such as lateral movement or privilege escalation. If confirmed malicious, attackers could gain valuable information about user accounts, enabling them to escalate privileges or move laterally within the network, posing a significant security risk.
Mshta spawning Rundll32 OR Regsvr32 Process: endpointEndpointrisk_score:562024-09-30version:4
The following analytic detects a suspicious mshta.exe process spawning rundll32 or regsvr32 child processes. It leverages data from Endpoint Detection and Response (EDR) agents, focusing on process GUID, process name, and parent process fields. This activity is significant as it is a known technique used by malware like Trickbot to load malicious DLLs and execute payloads. If confirmed malicious, this behavior could allow attackers to execute arbitrary code, escalate privileges, or download additional malware, posing a severe threat to the environment.
Any Powershell DownloadString: endpointEndpointrisk_score:562024-09-30version:6
The following analytic detects the use of PowerShell's `DownloadString` method to download files. It leverages data from Endpoint Detection and Response (EDR) agents, focusing on process execution logs that include command-line details. This activity is significant because `DownloadString` is commonly used in malicious PowerShell scripts to fetch and execute remote code. If confirmed malicious, this behavior could allow an attacker to download and run arbitrary code, potentially leading to unauthorized access, data exfiltration, or further compromise of the affected system.
CMD Carry Out String Command Parameter: endpointEndpointrisk_score:302024-10-17version:6
The following analytic detects the use of `cmd.exe /c` to execute commands, a technique often employed by adversaries and malware to run batch commands or invoke other shells like PowerShell. This detection leverages data from Endpoint Detection and Response (EDR) agents, focusing on command-line executions and process metadata. Monitoring this activity is crucial as it can indicate script-based attacks or unauthorized command execution. If confirmed malicious, this behavior could lead to unauthorized code execution, privilege escalation, or persistence within the environment.
Net Localgroup Discovery: endpointEndpointrisk_score:152024-11-26version:4
The following analytic detects the execution of the `net localgroup` command, which is used to enumerate local group memberships on a system. It leverages data from Endpoint Detection and Response (EDR) agents, focusing on process execution logs that include command-line details. This activity is significant because it can indicate an attacker is gathering information about local group memberships, potentially to identify privileged accounts. If confirmed malicious, this behavior could lead to further privilege escalation or lateral movement within the network.
Process Creating LNK file in Suspicious Location: networkEndpointrisk_score:632024-09-30version:8
The following analytic detects a process creating a `.lnk` file in suspicious locations such as `C:\User*` or `*\Local\Temp\*`. It leverages filesystem and process activity data from the Endpoint data model to identify this behavior. This activity is significant because creating `.lnk` files in these directories is a common tactic used by spear phishing tools to establish persistence or execute malicious payloads. If confirmed malicious, this could allow an attacker to maintain persistence, execute arbitrary code, or further compromise the system.
WinEvent Scheduled Task Created Within Public Path: endpointEndpointrisk_score:702024-11-28version:6
The following analytic detects the creation of scheduled tasks within user-writable paths using Windows Security EventCode 4698. It identifies tasks registered via schtasks.exe or TaskService that execute commands from directories like Public, ProgramData, Temp, and AppData. This behavior is significant as it may indicate an attempt to establish persistence or execute unauthorized commands. If confirmed malicious, an attacker could maintain long-term access, escalate privileges, or execute arbitrary code, posing a severe threat to system integrity and security.
Office Product Spawning MSHTA: endpointEndpointrisk_score:632024-11-28version:7
The following analytic identifies instances where a Microsoft Office product spawns `mshta.exe`. This detection leverages data from Endpoint Detection and Response (EDR) agents, focusing on process creation events where the parent process is an Office application. This activity is significant because it is a common technique used by malware families like TA551 and IcedID to execute malicious scripts or payloads. If confirmed malicious, this behavior could allow attackers to execute arbitrary code, potentially leading to data exfiltration, system compromise, or further malware deployment.
Suspicious Regsvr32 Register Suspicious Path: endpointEndpointrisk_score:352024-09-30version:6
The following analytic detects the use of Regsvr32.exe to register DLLs from suspicious paths such as AppData, ProgramData, or Windows Temp directories. It leverages data from Endpoint Detection and Response (EDR) agents, focusing on process execution logs and command-line arguments. This activity is significant because Regsvr32.exe can be abused to proxy execution of malicious code, bypassing traditional security controls. If confirmed malicious, this could allow an attacker to execute arbitrary code, potentially leading to system compromise, data exfiltration, or further lateral movement within the network.
Rundll32 Process Creating Exe Dll Files: endpointEndpointrisk_score:802024-09-30version:4
The following analytic detects a rundll32 process creating executable (.exe) or dynamic link library (.dll) files. It leverages Sysmon EventCode 11 to identify instances where rundll32.exe generates these file types. This activity is significant because rundll32 is often exploited by malware, such as IcedID, to drop malicious payloads in directories like Temp, AppData, or ProgramData. If confirmed malicious, this behavior could allow an attacker to execute arbitrary code, establish persistence, or escalate privileges within the environment.
RunDLL Loading DLL By Ordinal: endpointEndpointrisk_score:492024-09-30version:8
The following analytic detects rundll32.exe loading a DLL export function by ordinal value. It leverages data from Endpoint Detection and Response (EDR) agents, focusing on process command-line executions. This behavior is significant because adversaries may use rundll32.exe to execute malicious code while evading security tools that do not monitor this process. If confirmed malicious, this activity could allow attackers to execute arbitrary code, potentially leading to system compromise, privilege escalation, or persistent access within the environment.
Disable Defender Submit Samples Consent Feature: endpointEndpointrisk_score:492024-12-08version:8
The following analytic detects the modification of the Windows registry to disable the Windows Defender Submit Samples Consent feature. It leverages data from the Endpoint.Registry data model, specifically monitoring changes to the registry path associated with Windows Defender SpyNet and the SubmitSamplesConsent value set to 0x00000000. This activity is significant as it indicates an attempt to bypass or evade detection by preventing Windows Defender from submitting samples for further analysis. If confirmed malicious, this could allow an attacker to execute malicious code without being detected by Windows Defender, leading to potential system compromise.
Schedule Task with Rundll32 Command Trigger: endpointEndpointrisk_score:702024-11-28version:4
The following analytic detects the creation of scheduled tasks in Windows that use the rundll32 command. It leverages Windows Security EventCode 4698, which logs the creation of scheduled tasks, and filters for tasks executed via rundll32. This activity is significant as it is a common technique used by malware, such as TrickBot, to persist in an environment or deliver additional payloads. If confirmed malicious, this could lead to data theft, ransomware deployment, or other damaging outcomes. Immediate investigation and mitigation are crucial to prevent further compromise.
Disable Defender Spynet Reporting: endpointEndpointrisk_score:492024-12-08version:8
The following analytic detects the modification of the registry to disable Windows Defender SpyNet reporting. It leverages data from the Endpoint.Registry data model, specifically monitoring changes to the registry path associated with Windows Defender SpyNet settings. This activity is significant because disabling SpyNet reporting can prevent Windows Defender from sending telemetry data, potentially allowing malicious activities to go undetected. If confirmed malicious, this action could enable an attacker to evade detection, maintain persistence, and carry out further attacks without being flagged by Windows Defender.
Powershell Fileless Script Contains Base64 Encoded Content: endpointEndpointrisk_score:562024-09-30version:5
The following analytic detects the execution of PowerShell scripts containing Base64 encoded content, specifically identifying the use of `FromBase64String`. It leverages PowerShell Script Block Logging (EventCode=4104) to capture and analyze the full command sent to PowerShell. This activity is significant as Base64 encoding is often used by attackers to obfuscate malicious payloads, making it harder to detect. If confirmed malicious, this could lead to code execution, allowing attackers to run arbitrary commands and potentially compromise the system.
Suspicious Rundll32 dllregisterserver: endpointEndpointrisk_score:352024-09-30version:5
The following analytic detects the execution of rundll32.exe with the DllRegisterServer command to load a DLL. It leverages data from Endpoint Detection and Response (EDR) agents, focusing on command-line executions and process details. This activity is significant as it may indicate an attempt to register a malicious DLL, which can be a method for code execution or persistence. If confirmed malicious, an attacker could gain unauthorized code execution, escalate privileges, or maintain persistence within the environment, posing a severe security risk.
FodHelper UAC Bypass: endpointEndpointrisk_score:812024-11-28version:6
The following analytic detects the execution of fodhelper.exe, which is known to exploit a User Account Control (UAC) bypass by leveraging specific registry keys. The detection method uses Endpoint Detection and Response (EDR) telemetry to identify when fodhelper.exe spawns a child process and accesses the registry keys. This activity is significant because it indicates a potential privilege escalation attempt by an attacker. If confirmed malicious, the attacker could execute commands with elevated privileges, leading to unauthorized system changes and potential full system compromise.
Disabling Defender Services: endpointEndpointrisk_score:492024-12-08version:8
The following analytic detects the disabling of Windows Defender services by monitoring registry modifications. It leverages registry event data to identify changes to specific registry paths associated with Defender services, where the 'Start' value is set to '0x00000004'. This activity is significant because disabling Defender services can indicate an attempt by an adversary to evade detection and maintain persistence on the endpoint. If confirmed malicious, this action could allow attackers to execute further malicious activities undetected, leading to potential data breaches or system compromise.
Suspicious Rundll32 PluginInit: endpointEndpointrisk_score:422024-09-30version:4
The following analytic identifies the execution of the rundll32.exe process with the "plugininit" parameter. This detection leverages data from Endpoint Detection and Response (EDR) agents, focusing on process creation events and command-line arguments. This activity is significant because the "plugininit" parameter is commonly associated with IcedID malware, which uses it to execute an initial DLL stager to download additional payloads. If confirmed malicious, this behavior could lead to further malware infections, data exfiltration, or complete system compromise.
Office Application Spawn rundll32 process: endpointEndpointrisk_score:632024-11-28version:7
The following analytic identifies instances where an Office application spawns a rundll32 process, which is often indicative of macro execution or malicious code. This detection leverages data from Endpoint Detection and Response (EDR) agents, focusing on process creation events where the parent process is a known Office application. This activity is significant because it is a common technique used by malware, such as Trickbot, to initiate infections. If confirmed malicious, this behavior could lead to code execution, further system compromise, and potential data exfiltration.
Suspicious Process File Path: endpointEndpointrisk_score:352024-11-28version:5
The following analytic identifies processes running from file paths not typically associated with legitimate software. It leverages data from Endpoint Detection and Response (EDR) agents, focusing on specific process paths within the Endpoint data model. This activity is significant because adversaries often use unconventional file paths to execute malicious code without requiring administrative privileges. If confirmed malicious, this behavior could indicate an attempt to bypass security controls, leading to unauthorized software execution, potential system compromise, and further malicious activities within the environment.
Eventvwr UAC Bypass: endpointEndpointrisk_score:802024-09-30version:6
The following analytic detects an Eventvwr UAC bypass by identifying suspicious registry modifications in the path that Eventvwr.msc references upon execution. This detection leverages data from Endpoint Detection and Response (EDR) agents, focusing on registry changes and process execution details. This activity is significant because it indicates a potential privilege escalation attempt, allowing an attacker to execute arbitrary commands with elevated privileges. If confirmed malicious, this could lead to unauthorized code execution, persistence, and further compromise of the affected system.
Remote System Discovery with Net: endpointEndpointrisk_score:152024-11-26version:4
The following analytic identifies the execution of `net.exe` or `net1.exe` with command-line arguments used to discover remote systems, such as `domain computers /domain`. This detection leverages data from Endpoint Detection and Response (EDR) agents, focusing on process names and command-line arguments. This activity is significant as it indicates potential reconnaissance efforts by adversaries or Red Teams to map out networked systems and Active Directory structures. If confirmed malicious, this behavior could lead to further network exploitation, privilege escalation, or lateral movement within the environment.
Executables Or Script Creation In Suspicious Path: endpointEndpointrisk_score:202024-11-28version:5
The following analytic identifies the creation of executables or scripts in suspicious file paths on Windows systems. It leverages the Endpoint.Filesystem data model to detect files with specific extensions (e.g., .exe, .dll, .ps1) created in uncommon directories (e.g., \windows\fonts\, \users\public\). This activity is significant as adversaries often use these paths to evade detection and maintain persistence. If confirmed malicious, this behavior could allow attackers to execute unauthorized code, escalate privileges, or persist within the environment, posing a significant security threat.
Disable Defender AntiVirus Registry: endpointEndpointrisk_score:492024-12-08version:8
The following analytic detects the modification of Windows Defender registry settings to disable antivirus and antispyware protections. It leverages data from the Endpoint.Registry data model, specifically monitoring changes to registry paths associated with Windows Defender policies. This activity is significant because disabling antivirus protections is a common tactic used by adversaries to evade detection and maintain persistence on compromised systems. If confirmed malicious, this action could allow attackers to execute further malicious activities undetected, leading to potential data breaches, system compromise, and further propagation of malware within the network.
Network Connection Discovery With Arp: endpointEndpointrisk_score:152024-10-17version:3
The following analytic detects the execution of `arp.exe` with the `-a` flag, which is used to list network connections on a compromised system. This detection leverages data from Endpoint Detection and Response (EDR) agents, focusing on process names, command-line executions, and related telemetry. Monitoring this activity is significant because both Red Teams and adversaries use `arp.exe` for situational awareness and Active Directory discovery. If confirmed malicious, this activity could allow attackers to map the network, identify active devices, and plan further lateral movement or attacks.
Office Document Executing Macro Code: endpointEndpointrisk_score:352024-09-30version:7
The following analytic identifies office documents executing macro code. It leverages Sysmon EventCode 7 to detect when processes like WINWORD.EXE or EXCEL.EXE load specific DLLs associated with macros (e.g., VBE7.DLL). This activity is significant because macros are a common attack vector for delivering malicious payloads, such as malware. If confirmed malicious, this could lead to unauthorized code execution, data exfiltration, or further compromise of the system. Disabling macros by default is recommended to mitigate this risk.
WinEvent Windows Task Scheduler Event Action Started: endpointEndpointrisk_score:802024-10-24version:5
The following analytic detects the execution of tasks registered in Windows Task Scheduler by monitoring EventID 200 (action run) and 201 (action completed) from the Task Scheduler logs. This detection leverages Task Scheduler logs to identify potentially suspicious or unauthorized task executions. Monitoring these events is significant for a SOC as it helps uncover evasive techniques used for persistence, unauthorized code execution, or other malicious activities. If confirmed malicious, this activity could lead to unauthorized access, data exfiltration, or the execution of harmful payloads, posing a significant threat to the environment.
Drop IcedID License dat: endpointEndpointrisk_score:632024-10-17version:3
The following analytic detects the dropping of a suspicious file named "license.dat" in %appdata% or %programdata%. This behavior is associated with the IcedID malware, which uses this file to inject its core bot into other processes for banking credential theft. The detection leverages Sysmon EventCode 11 to monitor file creation events in these directories. This activity is significant as it indicates a potential malware infection aiming to steal sensitive banking information. If confirmed malicious, the attacker could gain unauthorized access to financial data, leading to significant financial loss and data breaches.
Windows AdFind Exe: endpointEndpointrisk_score:252024-10-17version:6
The following analytic identifies the execution of `adfind.exe` with specific command-line arguments related to Active Directory queries. It leverages data from Endpoint Detection and Response (EDR) agents, focusing on process names, command-line arguments, and parent processes. This activity is significant because `adfind.exe` is a powerful tool often used by threat actors like Wizard Spider and FIN6 to gather sensitive AD information. If confirmed malicious, this activity could allow attackers to map the AD environment, facilitating further attacks such as privilege escalation or lateral movement.
Suspicious IcedID Rundll32 Cmdline: endpointEndpointrisk_score:562024-09-30version:4
The following analytic detects a suspicious `rundll32.exe` command line used to execute a DLL file, a technique associated with IcedID malware. It leverages data from Endpoint Detection and Response (EDR) agents, focusing on command-line executions containing the pattern `*/i:*`. This activity is significant as it indicates potential malware attempting to load an encrypted DLL payload, often named `license.dat`. If confirmed malicious, this could allow attackers to execute arbitrary code, leading to further system compromise and potential data exfiltration.
Wmic NonInteractive App Uninstallation: endpointEndpointrisk_score:252024-10-17version:5
The following analytic identifies the use of the WMIC command-line tool attempting to uninstall applications non-interactively. It leverages data from Endpoint Detection and Response (EDR) agents, focusing on specific command-line patterns associated with WMIC. This activity is significant because it is uncommon and may indicate an attempt to evade detection by uninstalling security software, as seen in IcedID malware campaigns. If confirmed malicious, this behavior could allow an attacker to disable security defenses, facilitating further compromise and persistence within the environment.
Windows Curl Download to Suspicious Path: endpointEndpointrisk_score:802024-11-28version:5
The following analytic detects the use of Windows Curl.exe to download a file to a suspicious location, such as AppData, ProgramData, or Public directories. It leverages data from Endpoint Detection and Response (EDR) agents, focusing on command-line executions that include the -O or --output options. This activity is significant because downloading files to these locations can indicate an attempt to bypass security controls or establish persistence. If confirmed malicious, this behavior could lead to unauthorized code execution, data exfiltration, or further compromise of the system.
Powershell Using memory As Backing Store: endpointEndpointrisk_score:402024-09-30version:4
The following analytic detects suspicious PowerShell script execution using memory streams as a backing store, identified via EventCode 4104. It leverages PowerShell Script Block Logging to capture scripts that create new objects with memory streams, often used to decompress and execute payloads in memory. This activity is significant as it indicates potential in-memory execution of malicious code, bypassing traditional file-based detection. If confirmed malicious, this technique could allow attackers to execute arbitrary code, maintain persistence, or escalate privileges without leaving a trace on the disk.
NLTest Domain Trust Discovery: endpointEndpointrisk_score:152024-12-11version:5
The following analytic identifies the execution of `nltest.exe` with command-line arguments `/domain_trusts` or `/all_trusts` to query Domain Trust information. It leverages data from Endpoint Detection and Response (EDR) agents, focusing on process execution logs and command-line arguments. This activity is significant as it indicates potential reconnaissance efforts by adversaries to understand domain trust relationships, which can inform their lateral movement strategies. If confirmed malicious, this activity could enable attackers to map out trusted domains, facilitating further compromise and pivoting within the network.
Regsvr32 with Known Silent Switch Cmdline: endpointEndpointrisk_score:562024-09-30version:5
The following analytic detects the execution of Regsvr32.exe with the silent switch to load DLLs. This behavior is identified using Endpoint Detection and Response (EDR) telemetry, focusing on command-line executions containing the `-s` or `/s` switches. This activity is significant as it is commonly used in malware campaigns, such as IcedID, to stealthily load malicious DLLs. If confirmed malicious, this could allow an attacker to execute arbitrary code, download additional payloads, and potentially compromise the system further. Immediate investigation and endpoint isolation are recommended.
Windows Phishing Recent ISO Exec Registry: endpointEndpointrisk_score:402024-10-17version:4
The following analytic detects the creation of registry artifacts when an ISO container is opened, clicked, or mounted on a Windows operating system. It leverages data from the Endpoint.Registry data model, specifically monitoring registry keys related to recent ISO or IMG file executions. This activity is significant as adversaries increasingly use container-based phishing campaigns to bypass macro-based document execution controls. If confirmed malicious, this behavior could indicate an initial access attempt, potentially leading to further exploitation, persistence, or data exfiltration within the environment.
Disable Defender MpEngine Registry: endpointEndpointrisk_score:492024-12-08version:8
The following analytic detects the modification of the Windows Defender MpEngine registry value, specifically setting MpEnablePus to 0x00000000. This detection leverages endpoint registry logs, focusing on changes within the path "*\\Policies\\Microsoft\\Windows Defender\\MpEngine*". This activity is significant as it indicates an attempt to disable key Windows Defender features, potentially allowing malware to evade detection. If confirmed malicious, this could lead to undetected malware execution, persistence, and further system compromise. Immediate investigation and endpoint isolation are recommended.
Suspicious Copy on System32: endpointEndpointrisk_score:632024-11-28version:4
The following analytic detects suspicious file copy operations from the System32 or SysWow64 directories, often indicative of malicious activity. It leverages data from Endpoint Detection and Response (EDR) agents, focusing on processes initiated by command-line tools like cmd.exe or PowerShell. This behavior is significant as it may indicate an attempt to execute malicious code using legitimate system tools (LOLBIN). If confirmed malicious, this activity could allow an attacker to execute arbitrary code, potentially leading to system compromise or further lateral movement within the network.
Windows ISO LNK File Creation: endpointEndpointrisk_score:402024-10-17version:4
The following analytic detects the creation of .iso.lnk files in the %USER%\AppData\Local\Temp\<random folder name>\ path, indicating that an ISO file has been mounted and accessed. This detection leverages the Endpoint.Filesystem data model, specifically monitoring file creation events in the Windows Recent folder. This activity is significant as it may indicate the delivery and execution of potentially malicious payloads via ISO files. If confirmed malicious, this could lead to unauthorized code execution, data exfiltration, or further system compromise.
Disable Schedule Task: endpointEndpointrisk_score:562024-09-30version:3
The following analytic detects the execution of a command to disable an existing scheduled task using 'schtasks.exe' with the '/change' and '/disable' parameters. This detection leverages data from Endpoint Detection and Response (EDR) agents, focusing on process names and command-line arguments. Disabling scheduled tasks is significant as it is a common tactic used by adversaries, including malware like IcedID, to disable security applications and evade detection. If confirmed malicious, this activity could allow attackers to persist undetected, disable critical security defenses, and further compromise the targeted host.
Network Share Discovery Via Dir Command: endpointEndpointrisk_score:252024-10-17version:3
The following analytic detects access to Windows administrative SMB shares (Admin$, IPC$, C$) using the 'dir' command. It leverages Windows Security Event Logs with EventCode 5140 to identify this activity. This behavior is significant as it is commonly used by tools like PsExec/PaExec for staging binaries before creating and starting services on remote endpoints, a technique often employed by adversaries for lateral movement and remote code execution. If confirmed malicious, this activity could allow attackers to propagate malware, such as IcedID, across the network, leading to widespread infection and potential data breaches.
Disable Defender Enhanced Notification: endpointEndpointrisk_score:492024-11-14version:6
The following analytic detects the modification of the registry to disable Windows Defender's Enhanced Notification feature. It leverages data from Endpoint Detection and Response (EDR) agents, specifically monitoring changes to the registry path associated with Windows Defender reporting. This activity is significant because disabling Enhanced Notifications can prevent users and administrators from receiving critical security alerts, potentially allowing malicious activities to go unnoticed. If confirmed malicious, this action could enable an attacker to bypass detection mechanisms, maintain persistence, and escalate their activities without triggering alerts.
Rundll32 DNSQuery: endpointEndpointrisk_score:562024-09-30version:4
The following analytic detects a suspicious `rundll32.exe` process making HTTP connections and performing DNS queries to web domains. It leverages Sysmon EventCode 22 logs to identify these activities. This behavior is significant as it is commonly associated with IcedID malware, where `rundll32.exe` checks internet connectivity and communicates with C&C servers to download configurations and other components. If confirmed malicious, this activity could allow attackers to establish persistence, download additional payloads, and exfiltrate sensitive data, posing a severe threat to the network.
Registry Keys Used For Persistence: endpointEndpointrisk_score:762024-12-03version:12
The following analytic identifies modifications to registry keys commonly used for persistence mechanisms. It leverages data from endpoint detection sources like Sysmon or Carbon Black, focusing on specific registry paths known to initiate applications or services during system startup. This activity is significant as unauthorized changes to these keys can indicate attempts to maintain persistence or execute malicious actions upon system boot. If confirmed malicious, this could allow attackers to achieve persistent access, execute arbitrary code, or maintain control over compromised systems, posing a severe threat to system integrity and security.
Executable File Written in Administrative SMB Share: endpointEndpointrisk_score:702024-11-28version:6
The following analytic detects executable files (.exe or .dll) being written to Windows administrative SMB shares (Admin$, IPC$, C$). It leverages Windows Security Event Logs with EventCode 5145 to identify this activity. This behavior is significant as it is commonly used by tools like PsExec/PaExec for staging binaries before creating and starting services on remote endpoints, a technique often employed for lateral movement and remote code execution. If confirmed malicious, this activity could allow an attacker to execute arbitrary code remotely, potentially compromising additional systems within the network.
Rundll32 CreateRemoteThread In Browser: endpointEndpointrisk_score:702024-09-30version:3
The following analytic detects the suspicious creation of a remote thread by rundll32.exe targeting browser processes such as firefox.exe, chrome.exe, iexplore.exe, and microsoftedgecp.exe. This detection leverages Sysmon EventCode 8, focusing on SourceImage and TargetImage fields to identify the behavior. This activity is significant as it is commonly associated with malware like IcedID, which hooks browsers to steal sensitive information such as banking details. If confirmed malicious, this could allow attackers to intercept and exfiltrate sensitive user data, leading to potential financial loss and privacy breaches.
